Shutter control for cameras of any type



June 19, 1934. I w. H. PETIT El' AL 7 1,963,411

SHUTTER CONTROL FOR CAMERAS OF ANY TYPE Original Filed Jan. 15. 1932 5 Sheets-Sheet 1 mix. T l

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SHUTTER CONTROL FOR CAMERAS OF ANY TYPE Original Filed Jan. 15, 1932 5 Sheets-Sheet 2 June 19, 1934. w PET|T ET AL I 1,963,417

SHUTTER CONTROL FOR CAMERAS OF ANY TYPE Original Filed Jan. 15, 1932 5 Sheets-Sheet 3 8 "/8 4 v A 62 49 1' l I x .52 F a .(Q -6/ A :4 e if? e g /60 /7 J l V June 19, 1934. w PETlT r AL 1,963,417

SHUTTER CONTROL FOR CAMERAS. CF ANY TYPE Original Filed Jan. 15, 1932 5 Sheets-Sheet 4 June 19, 1934. w. H. PETIT ET AL 1,963,417

SHUTTER CONTROL FOR CAMERAS OF ANY TYPE Original Filed Jan. 15, 1932 5 Sheets-Sheet 5 I P F /45 Iaweaafirs: WzZZlbaaa/HPeizi; Edaon 6 .Hiz'aaeiz'aw Patented. June 19, 1934 SHUTTER CONTROL FOR CAMERAS OF ANY TYPE William H. Petit, Dayton, Ohio, and Edson S. Hineline, Rochester, N. Y., assignors to Folmer Grafiex Corporation, Rochester, N. Y., a corporation of Delaware Original application January 15, 1932, Serial No. 586,919. Divided and this application November 23, 1933, Serial No.'699,324

This application is a division of our co-pending register or other object. Thereare lateral openapplication Ser. No. 586,919, filed January 15, ings. 8 at the rear of this extension adjacent to 1932. two lateral lamp chambers 9 containing electric This invention relates to shutter, control for lamps 10, which, as before stated and later ex- 5 cameras of any type, but particularly to autoplained, are constantly illuminated while the 60 matic film cameras. It is to be understood, howcamera is in use. The interior walls of the exever, that the invention may be used with cut tension '1 are whitened or' otherwise rendered films, roll films, film packs or a plate type of reflecting, so that the scattered rays of light camera. from the lamps will carry to the object. 7

10 In order that the principle of the inventionv On the rear inclined wall of the hood 2 is ar- 65 may be readily understood, we have disclosed a ranged a mirror 11 (Fig. 3) within a chamber 12 sin l m odim nt thereof i h c mpanyi having an opening Eat the front through which drawings, wherein--- the image reaches the mirror. Such image is Fi 1 is a sid leva i n f a h nd camer cast downwardly through an opening 14 in the 16 constructed in accordance with and illustrating bottom wall of th h b t a 1911s t 1 70 one embodiment of our invention; provided with a shutter, indicated generally at 17. 2 is a a e va thereof; This lens tube and shutter are carried on a rei 3 i an enlarged e l Sectio ake on movable panel 18 constituting the bottom of the the line 3- -3 of Fig. 2; hood 2, and the tube projects through a suitable Fig- 3a is a n a ed e t Section, With central opening 19 in the top wall 20 of the body parts broken away, taken through the magazine; b 1, e 4 i a enlarged p p View Of t b Fitting within the said body box 1 and slidtom or floor of the hood or superstructure of the ably r mov ble therefrom at the front is an camera; inner box-like magazine 21 which magazine car- 25 F 5 is edge i w Of t Sa e a e m ries the motor, film mechanism and operating the rear and sh win in f a m n ry i n a gear hereinafter described. It is held in place portion of the rear Wall Of the hood with which by the usual thumb screw extending through and its function is related; accessible from the exterior of the back of the Fig. 6 is an elevation of the inner side of a cam ra, box,

mounting plate or an outer wall of the magazine A ntral exposure cha ber 23 in the maga- 85 carryin h electrical controlling m han m, zine aligns itself vertically with the lenstube 16 the circuits t e e being S o di that receives the image from the mirror 11 and cally; projects it downwardly to an exposure opening Fig. '1 is an edge view of such mounting plate 24 t, th b tt m, I

taken Pa lyin Section on the line of Going back for a moment to the panel 18 on 90 6; and the floor of the hood element 2, on which the shut- F 3 is a diagram of the general circuit ter 1'1 (Figs. 3, 4 and 5) has been described as rangement. g i being mounted, the usual operating lever 47 of Referring more particularly to the drawings, this shutter is pivoted at 48 to the core 49 01' a the general preferred form of thecamera is best l oid 50 mmmted on the panel and wired in show in i 2 and It Comprises a w r the manner hereinafter described to operate the bo b y p Which Tests 0 in another shutter at the proper time. Also mounted on this w y, whi h i sp nd d r m a p r r panel at opposite sides of the shutter are two consisting of a hood 2 provided with lateral hant d d 51 carrying lamps 52 These pimps 46 dle 3 s r n e that the camera as a wh l project in proximityto two openings 53 and 54 in is balanced in the operators hands as he carries th ar wall of the hood element 2, the former t it about or presents it to the meter or other object of which i fitted in the present instance, with a to b p aph d These maj r pa ts a d clear window and the latter with a ruby window ta hab y connected toget y means of bolts 4 to constitute respectively the film signal and the 50 at the sides of a type well known in the photo shutter, signal desirably used in the disclosed graphic art in conjunction with plates 5 provided embodiment of our invention. The one is wired with eyes 6 for a neck strap, if desired. a in a manner hereinafter described to contact fin- Fitted to the front of the hood is a central 'gers normally contacting with an idler over which extension '7 of a configuration adapting it to set the film passes,'and the latter is wired to the 55 close against and surround the meter dial or shutter mechanism. Also on this rear signal wall is the main operating button adjacent to one of the handles 3, so that it can be conveniently pressed by the thumb of the operator as he holds the camera before him.

The prime mover for driving the camera consists of a motor, indicated generally at 56, shown in Fig. 3a and located in the chamber above the film chamber in the magazine 21. Its vertical shaft 57 communicates motion through worm gearing 58 to a shaft 59, all supported in a gear box 60 attached to the motor casing 61. This shaft extends forwardly and its end projects into the cavity 32 of the front wall of the magazine, where it terminates in a driving pinion 62 (Fig. 6) The controlling mechanism is carried by a cover plate 63 fastened to the front wall of the magazine 21. It embodies a master gear 64 driven by the said pinion 62 and itself carrying a pinion 65 driving a gear 66 meshing with a twin gear 67. This gearing, considered collectively, we term the cycle element or cycle mechanism because a cycle of movement thereof effects the successive operation of the camera parts in their proper order. Carried on the mounting plate are four insulated brackets 68, 69, 70 and 71, each carrying a set of contact members. The bracket 68 carried three contact fingers 72, 73 and 74 relating to the motor circuit. The center finger 73 is normally held closed, as in Fig. 6, by a pin 75 on gear 66 acting through a spring leaf 76 which, when released by the pin, moves said finger over to contact with finger 74.

Bracket 69 carries three contact fingers 77, 78

,and 79 and similarly a spring leaf 80 on the bracket normally holds contacts 77 and 78 together, but the center finger 78 may be broken therewith and moved to contact 79 by a cam 81 on gear 67 engaging the spring leaf 80. Bracket 40 70 carries two contact fingers 82 and 83 normally held open by a spring actuator 84 but closed when the latter is suitably engaged by cam 81.

Bracket 71 carries two contact fingers 85 and 86 with an intermediate finger 87 held normally in contact with the latter by'a spring actuator leaf 88. This leaf is actuated to reverse the contact to the other finger 85 by a cam 89 on film shaft 38, heretofore described.

These circuit arrangements will be later described with reference to the diagrammatic view of Fig. 7.

For convenience in winding the film by hand, as when initially threading it through the magazine, the stem of the film winding key 31 extends through the mounting plate 63 (Figs. 6, 7)

The motor drive for the winding key 31 is provided as follows:

Gear 67 of the cycle mechanism meshes with a gear 110 turning freely on the stem 98 of the winding key 31. This gear 110 is provided with openings 111 and constitutes the female element of a clutch, a male element 112 provided with pins 113, being splined on the stem 98 to slide axially into and out of engagement. The ele- 5 ment 112 has a peripheral groove in which engage the pins 114 of a shipping yoke 115 carried on the wrist pin 116 of a crank arm 117. The crank arm is mounted on a vertical shaft 118 supported in a bracket 119 on the mounting plate 63. At its opposite or upper end, there is fixed to the shaft a rocking beam 120, to opposite ends of which are pivoted two solenoid cores'121 and 122. v These project through openings 123 in plate 34 on the under side of the front wall of the magazine and into solenoid coils 124 and 125 secured to the inner side of said plate. It will be seen that when solenoid 125 is energized, the core 122 will be attracted and rock the shaft 118 to throw in the clutch elements 110 and, 112 connecting the gearing with the winding key 31, whereas energizing solenoid 124 attracts core 121 and disengages the clutch.

As the electrical circuits extend between all of the relatively detachable parts that have been described, it is impractical to connect them with continuous wires. We hence provide banks of terminal contacts on adjacent members which, when the members are associated, close the various circuits, but which permit the members to be disassociated at will.

The camera is connected with a source of current, as first described, through a plug fixture 132 on the left side of the hood 2. The circuit arrangements and cycle of automatic operation will now be described with'reference to the diagram of Fig. 8.

Referring to this diagram, it is obvious without the use of further reference numerals that the object illuminating lamps 10 are connected in parallel with the line circuit and will be illuminat ed continuously while the apparatus is pluggod in at 132. Besides the normal driving field 133, the motor 56 is provided with a field 138, which acts as a dynamic brake for restraining and promptly halting it. When the apparatus is plugged into the line wire or source of electrical supply at 132, a current reduced in volume by the variable resistance 140 immediately flows through this field 138 through'circuit plus 132, wires 134 and 135, motor 56, field 138, wire- 139, resistance 140, wire 141, contact finger 72, contact finger '73, wire 142, wire 137 and back to the minus side of 133. Assuming that the lead end of the film 93 has been threaded through the gate and attached to the winding spool 29, the manual operating button 55 is pressed by the user, a circuit is established through field 133 of the motor and the latter set in motion through circuit plus 132, wires 134 and 135, motor 56, field 133, wires 136 and 137, button 55, wire 143 back to 132, and the gearing of Fig. 6 is set in motion.

As soon as the temporary circuit, through the switch button, has been thus established through the positive forward driving field of the motor, pin 75 on gear 66 releases finger 73 from contact 72 opening the reverse or brake field and establishes contact 72 in contact with finger 74, completing a working circuit through the motor during one rotation of the cycle gear 66, as follows: Plus 132, wire 134, wire 135, motor 56, field 133,

wire 136, wire 144, contact 74, contact 73, wire opening. it is, of course, immaterial whether the shutter is operated or not, but once such presentation is made at the beginning of the succeeding cycle, cam 81 on the twin cycle gear 67 from its position in Fig. 6'fiexes the actuator spring 84 to close the circuit between contact fingers 82--83 and operate the shutter as follows: plus 132, wire 134, wire 147, solenoid 50, wire 149, contact 82, contact 83, wires 150, 151, 142, 143 back to minus 132. At the same time, a parallel circuit is established from wires 149 and 147 through awire 152 and red lamp signal 54, which latter is illuminated while the shutter is open and so held by solenoid 50 acting upon shutter operating lever 47.

After cam 81 has left actuator 84, opening the shutter circuit again at 82-83, it next engages actuator 80 to shift contact finger '78 from contact finger 77 to contact finger 79. While 78 has been theretofore closed with '77, a circuit has been maintained through solenoid 124 acting on core 121 to hold the winding clutch member 112 in disengaged position, this circuit being as follows: plus 132, wire 134, wires 153 and 154, solenoid 124, wire 155, contact 78, contact 77 wire 156, contact finger 87 on the film winding control, contact 85, wires 157 and 151, wires 142 and 143 back to minus 132. When contact finger '78 is so shifted to contact finger '79, the other solenoid 125 operating upon core 122 to throw the clutch in is energized through the following circuit: plus 132, wires 134, 153 and 158, contact 79, contact '78, wire 155, solenoid 125, wire 159 and wires 142 and 143 back to 132 minus.

A feature of the electrical arrangements of our apparatus resides in the fact that the illumination of the object and the duration of the exposure through the shutter are automatically correlated, because if the voltage is low, the illumination by the lamps 10 will be less intense, but the action of the motor will be correspondingly aifected and the speed of the shutter actuating means correspondingly slowed up, while'the reverse would be true in the latter action when the voltage is increased and a more intense light is furnished by the lamps. To this end, the operating motor is so wound that a slight change 1 in voltage will be reflected in an increase or decrease in the speed thereof, which is a characteristic usually to be avoided in the construction of motors but highly acceptable to the purposes herein involved. Of course, the average voltage under which the motor is expected to operate is coordinated with the length'of the cam 81, which cam in greater or lesser length can be interchanged'to meet particular conditions.

Having thus described one illustrative embodiment of the invention, it is to be understood that although specific-terms are employed, they are used in their generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims:

What is claimed is,

1. In an electrically operated automatic film camera wherein a motor and an electric circuit are provided, and wherein the feeding of the film is effected through control of said circuit and wherein the motor is so wound that variations in voltage will correspondingly vary the motor speed, a shutter operatively connected to said circuit whereby the speed of the shutter will vary with that of the motor.

cuit are-provided, and wherein an object-illuminating lamp is in parallel with said circuit so that variations in intensity of the lamp are in accordance with changes in motor speed, and wherein the feeding of the film is effected through control of said circuit and wherein the motor is so wound that variations in voltage will correspondingly vary the motor speed, a shutter operatively connected to said circuit whereby the speed of the shutter will vary with that of the motor. I 1

3. In an electrically operated automatic film camera wherein'a motor and an electric circuit are provided, and wherein the feeding of the film is effected through control of said circuit and wherein the motor is so wound that variations in voltage will correspondingly vary the motor speed, a shutter operatively connected to said circuit whereby the speed of the shutter will vary I with that of the motor, and a red light operatively connected to said circuit so as to function when the shutter is open.

4. In an electrically operated automatic film camera wherein a motor and an electric circuit are provided and wherein the feeding of the film is effected through control of said circuit and wherein the motor is so wound that variations in voltage will correspondingly vary the motor speed, and wherein is a cycle mechanism in operative relation to said circuit to effect the successive operations of the camera parts in their proper order, a shutter operatively connected to said circuit whereby the, speed of the shutter will vary with that of the motor, meansfor plugging the circuit of the camera into a main circuit,

and means whereby the operator of the camera may manually control the cycle mechanism.

WILLIAM H. PE'IIT. EDSON S. HINELINE. 

